如此，在容限电压法当中，直流电压和和有功功率分别被整流器和反相器所控制。
Thus, in the voltage margin method, the dc voltage and the active power are separately controlled by the rectifier and the inverter, respectively.
这两者都有降低网络有功损耗和提高网络节点电压的功能。
They both have the function to reduce the active power losses and improve nodes' voltage level.
只有做到合理补偿无功功率，才能有效地维持和稳定系统电压水平，从而降低有功损耗，提高系统供电效率。
Compensating reactive power reasonably can keep system's stable voltage level effectively, so reduces the active loss, improves system's efficiency of power supply.
合理的无功分布既可以保证网络电压质量又可以降低网络有功损耗。
A reasonable reactive power distribution can not only guarantee the voltage, but also reduce active power wastage.
容压法电力交换控制已经应用于终端控制器的直流电压控制部分和有功功率控制部分。
The voltage margin method for interchange power control was applied to the dc voltage control block (DC-AVR) and the active power control block (APR) in the terminal controller.
为降低开关频率和减少开关损失，需增加功率滞环比较器环宽，否则引起瞬时有功功率和直流电压波动，影响系统的性能；
The hysteresis wide is widened for decreasing switching frequency and energy losses, which causes the pulsation of instantaneous active power and direct current voltage.
至今几乎所有的电力变换器为在线换向式的当有功功率较小，而消耗的无功较大时，对所联接母线的电压是非常有害的。
Almost all the power converters in use up to now are line-commutated, when the level of active power is low, and reactive power consumed is high, being very harmful for the connection bus voltage.
交流电网侧通过双闭环控制，实现有功功率和无功功率的解耦控制，同时具有稳定直流母线电压的能力。
The alternate current line side realizes the decoupling control of active power and reactive power through double closed loop and the stability of direct current voltages at the same time.
该拓扑具有所有功率开关均为软开关，输出二极管电压应力低和输入输出滤波器小的特点。
There are soft switching conditions of all switches, low voltage stresses on the output diodes, and smaller input and output filters in this topology.
配电网合理的电容器配置不仅可以有效改善电网的电压水平，降低系统的有功网损，而且能够避免谐波谐振或电流放大。
The desirable scheme of capacitor placement in distribution systems aims at achieving voltage regulation and power loss reduction, while preventing harmonic resonance or magnification.
该方法通过对负载参考电压相角的旋转和幅值的“伸缩”，扩大了DVR的补偿范围，减少了D VR的有功输出。
By making changes of reference voltage phase diagrams of load, this method can enlarge the compensation range and decrease the energy output of DVR.
变电站电压无功控制系统可提高电压的质量和降低电网的有功损耗。
The voltage and reactive power control system for substations can improve voltage quality and reduce the active power loss.
电压无功控制系统对于提高电压质量，降低电网的有功损耗有着重要的意义。
The voltage and reactive power control system can improve voltage quality and reduce the active power loss.
仿真结果表明，该动态模型能够预测输出电压。响应曲线显示出自适应模糊控制算法能够较好控制燃料电池有功和无功功率的输出。
The response curves indicate that the adaptive fuzzy control is able to control the active output power and the reactive output power of the fuel cell.
以通用瞬时无功功率理论为基础，阐述了电压不对称和非正弦条件时的有功和无功电流的物理意义。
The interpretation of active and reactive currents in non-sinusoidal and unbalanced three-phase four-wire systems is given based on the generalized instantaneous reactive power theory.
矿井电力负荷综合传感器主要是测量矿井电力负荷的电流、电压、有功电度和无功电度四个参数。
The synthetic sensor for the mine power loads mainly measured the current, voltage, active-energy and reactive-energy.
电力系统中常需测量电压、电流、功率因数、有功功率、无功功率和视在功率等参数。
In an electric power system, the following parameters often need measuring: voltage, current, power factor, power, reactive power and apparent power.
网侧变流器采用直流电压稳定并保证并单位功率因数并网，并将负荷侧吸收的有功功率馈送回电网。
The gird side converter is adopted DC voltage stable and unit power factor grid-connected control, and feedback the active power absorbed from the load side to the grid side.
该方法考虑了风速和负荷变化对风电场输出有功功率和无功功率的影响，对风电场节点的处理较准确地反映了其无功和电压特性。
This method considered the influence of wind speed and load on active power output and reactive power output of wind farms. The processing of the wind farm node reflects its character accurately.
本文在综合考虑电网安全性和经济性的前提下，提出了电力系统多目标无功优化模型，模型中考虑了系统有功网损和电压水平。
According to grid safety and economy, multi-objective model of reactive power optimization was put forward, which contained active losses of system and voltage levels.
该方法以电网电压为同步信号，在电网电压信号的过零点采样直流侧电容电压，并通过周期离散控制可以获得负荷电流有功分量。
The new control way can realize linear control for DC-bus voltage and get the fundamental component of the load current synchronously with a little of calculation.
该模型考虑了系统有功损耗最小、静态电压稳定指标最小两个优化子目标。
A model of bi-objective optimal allocation is established, where the active power loss minimization and index of static voltage stability minimization are taken into account.
这两种电路都具有功率因数高、输出电压较低等特点。
Two circuits, characterized by high Power Factor and low output voltage, are proposed.
PWM整流器具有功率因数高、能量可双向流动、直流电压恒定等优点。
PWM rectifiers have the characteristics of large power factor, bidirectional power flow and constant direct voltage.
风电变流器在国产化的过程中也必须要具有低电压穿越、不对称故障下运行的能力和动态无功、有功功率的调节能力。
The wind power converter must possess abilities of Low voltage Ride through (LVRT), available operation with unbalanced voltage fault and adjusting active as well as reactive power.
结果表明该电路限定开关器件电压变化率和电流变化率的能力良好，具有功耗较低的优势。
The result shows that the circuit is powerful in limiting the voltage and the current change rates of the switch devices and has an advantage of less power consumption.
县级电网电压无功综合控制系统是进一步降低电网有功损耗、提高县级电网电压水平的有效措施。
Reactive power control system of county grid is a very beneficial tool to reduce the loss of active power and upgrade the level of voltage of county grid.
游梁式抽油机的负载特性以及井组平台的运行特性导致了油田配电网功率因数普遍偏低，增加了配电网的电压损失与有功损耗。
The power factor of distribution system is very low because of the beam pumping unit's load characteristics and oil well group platform's operating characteristics, increases voltage and power losses.
从而可兼顾系统有功损耗、电压质量及设备动作次数的综合优化效果。
And accordingly the system power loss, voltage, and equipment action times can be optimized.
从而可兼顾系统有功损耗、电压质量及设备动作次数的综合优化效果。
And accordingly the system power loss, voltage, and equipment action times can be optimized.
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